Improvement in spring bed-bottoms



J. HALSTON.

Improvemeht in Spring Bed-Bottoms.

Patented Nov. 12,1872.

AM PHara-LlrHa6RAPHlc camxmsebnucs PRocEss) JOHN RALSTON, OF MANSFIELD, OHIO.y

IMPROVEMENT IN SPRING BED-BOTTOMS.

Specification forming part of Letters Patent No. 132,9S2, dated November 12, 1872.

To all whom it may concern:

Be it known that I, JOHN RALSTON, of

Mansfield, in the county of Richland and State of Ohio, have invented a new and useful Improvement in Spring Bed-Bottom, of which the following is a specification:

Figure lis a vertical longitudinal section of my improved spring bed-bottom. Fig.2is a detail cross-section taken through the line :c Fig. 1 5 Fig. 3 is a detail cross-section tathe end cross-bars, blocks, and spring crossbars with the frame and with the upper and lower spring-slats, the coiled springs, and cross-bars,as hereinafter more fullydescribed.

A is a box or frame, which is made of such a size as to fit into and be supported by the bedstead. B are the lower spring-slats, the middle parts of which pass below and are secured to a cross-bar, O, the ends of which are secured to the lower edges of the side bars of the frame A. The spring-slats B pass above and rest upon two cross-bars D attached to the lower edges of the side bars of the frame A, upon the opposite sides of, and a little distance from, the central cross-bar O. The ends of the spring-slats B are attached to the lower sides of the cross-bars E, which are made of such a length as to pass between the side bars of the frame A, and to the upper sides of which are attached the ends of the upper spring-slats F. The middle parts ofthe upper spring-slats F are secured to the upper side of the cross-bar G, which is made of such a length as to pass down freely between the side bars of the frame A. To the lower side of the cross-bar G are attached the upper ends to the ends oi' which are secured the ends of the spring' cross-bars L, blocks being interposed, when desired, between said ends. The cross-bars E are placed at such a distance from the end bars of the frame A that they may Work freely along the inner edges ot' the cross-bar I and spring-bars K L, as shown in Fig. l. The ends of the spring-slats B are cut oft' at or near the outer sides of the crossbars E. The ends of the spring-slats F project to, or nearly to, the end bars ofthe frame A, so as to overlap the springl cross-bars L.

In ordinary use the ends of the spring-slats F do not come in contact with the spring crossbars L, but should greater weight be placed upon the bed-bottom, the ends of the springslats F will be forced down upon the spring cross-bars L, so that the spring-bars K L may assist in supporting the weight.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. The combination ot' the upper spring-slats F, lower spring-slats B, coiled springs H, and

cross-bars C D E G with each other and withv frame A and with the spring-slats F B, springs H, and cross-bars C D E G, substantially as herein shown and described, and for the purpose set forth.

JOHN RALSTON. Witnesses:

JOHN H. 00X, JEROME LEE. 

